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1983年1月11～13日煤炭部技术发展司在徐州召开了矿用隔爆技术馈电开关鉴定会。这种开关是煤炭科学研究院开采所,徐州煤矿机械厂联合锦州8230厂共同研制的。随着综合机械化采煤技术的发展,煤矿井下设备容量增大,负荷集中,供电电压提高(1140伏)。另一方面,煤矿又具有工作环境恶劣,维修条件困难的特点。为确保生产和人身安全,需要研制一种断流容量高,保护性能完善的新型馈电开关做为移动变电站低压侧的配电总开关,或做为供电线路的分支开关。
1983 January 11 ~ 13 Department of Coal Technology Development Division held in Xuzhou mine flameproof technology feed switch identification meeting. This switch is the Institute of Coal Mining, Xuzhou Coal Mine Machinery Factory jointly developed Jinzhou 8230 plant. With the development of mechanized mining technology, the capacity of coal mine equipment is increased, the load is concentrated, and the supply voltage is increased (1140 V). On the other hand, coal mines also have the characteristics of poor working conditions and difficult maintenance conditions. In order to ensure the production and personal safety, it is necessary to develop a new feed switch with high cut-off capacity and perfect protection performance as the main switch of low-voltage distribution in mobile substations or as a branch switch of power supply lines.